Molding-machine.



N0. 704,712. W. M. DUNCAN.

MOLDING MACHINE. A umimi med July 3, 1901.1

(N ModeL) Patented July 15, I902.

2 Sheet-Shget l.

No. 704,7l2. Patented July I5, 19(02.

W. M. DUNCAN.

MOLDING MACHINE.

(Application filed' July 3, 1901.)

2 Sheets-Sheet 2.

(Na MndeL) RS 110.. Pnordunm, wAsumr-mm. a. a

' To all whom it may concern.-

UNITED STATES PATENT OFFICE.

WILLIAM M; DUNCAN, OF ALTON, ILLINOIS, ASSIGNOR OF ONE-HALF TO- JAMES DUNCAN, OF ALTON, ILLINOIS.

MOLDING- SPECIFICATION forming part of Letters Patent No. 704,712, dated July 15, 1902.

Application filed July 3, 1901. Serial F0. 66,945. (No model.)

Be it known that 1, WILLIAM M. DUNCAN, a citizen'of the United States, residing at Alton, in the county of Madison and State of Illinois, have invented. certain new and usef n11 Improvements in Moldingdlfachinespf which.

the following is a full, clear, and exact descript-ion, reference being had to the accom-v panying drawings, forming part of this speci fieation. V

The object of my invention is to produce a machine in which after the mold is formedit, together with the pattern, can be inverted and the pattern then withdrawn and moved back to its original position, so that another mold can be formed while the casting is being made in the first-mentioned mold.

My invention consists in features of novelty hereinafter fully described, and pointed out in the claims. T

Fignre I is a side view of my improved-machine, showing the parts in the position that they occupy after a mold has been formed and, with the pattern, inverted by being transferred to the other side of the machine,

the pattern being shown by dotted lines in its raised position. The chill-ring is shown in section. Fig. II is a top or plan view with the parts in the same position as shown'in Fig. 'I. Fig. III is a vertical section showing the parts in position for forming a mold, the

clamping-plate being shown in a vertical position as in the act of being reversed. Fig. IV is an enlarged detail vertical section taken on line IV IV, Fig. I.

Referring to the drawingsql representsa' carriage consisting of a suitable framework 2, supported on wheels 3 to provide for the movement of the machinefrom one part of 10 represents a clamping-plate loosely pivoted to the shaft 4 by means of right-angle extensions 11,througl1 which the shaft passes. .W'hen in the position shown in'Fig.'I, this .plate rests upon astationarybracket 12, se-

cured tothe'frame of the machine, and forms the su pport for the mold. The plate is adapted to he swung over to the other side of the machine, and when-so moved it" is positioned over the frame 8,- (see Fig. 111,) to which its outer end is made fast by means of a pivoted handle 13, adapted to fit overa projection 14 on the frame, the handle having a slot at 15,

that receives theprojection 14: and holds the plate to the-frame.

16 indicates the pattern-supporting plate upon which the pattern 16 is supported, which, together with the pattern 16, is adapted to fit in the frame 8, as seen in Fig. 111, and which is supported bya threaded rod 17, surrounded by a threaded sleeve 18,- loosely fitting within a hub 19. The hub has horizontally-extending arms 20, that are connected I .to the frame 8 by means of standards 21. The sleeve 18 is heldifrom longitudinal movement "within the hub 19 by means of a plate 22 on one end and an enlargement 23 on its other end.

24- represents a hand-wheel secured to the sleeve 18- and by means of which the sleeve can be turned to move the rod- 17 and draw the pattern-supporting plate 16 and the pattern'16 away from the frame 8.

-- The pattern-supporting plate is provided with dowel-pins 25, adapted toseat in holes formedin the frame 8 for the purpose of contering the pattern supporting plate. The

"pattern-supporting plate (see Fig. IV) has The operation of themacli'ine sits, follows:

When a mold is being formed, the parts are in the positions shown in Fig. 111, except that the clamping-plate would not be moved up to the, vertical position shown in Fig. III, but would rest down upon the bracket 12, as

shown in Fig. I. After the mold is formed the bottom-board 26 is placed on top of the mold and chill-ring, and the plate is then swung over onto the bottom-board and the handle 13 caused to engage the frame 8 by fitting over the projection 14. The parts are then reversed by moving them to the position shown in Fig. I, after which the pattern 16 is removed from the mold by turning the sleeve 18, the pattern-supporting plate and the pattern being thus moved into the position shown by dotted lines in Fig. I. As the pattern is removed the bottomboard, the chill-ring, and the mold remain resting on the plate 10. The next act is to release the frame 8 from the plate 10, which is done by swinging the handle 13 downwardly in the direction of the arrow in Fig. I. The frame 8 is next moved upwardly and with the pattern, and the parts that support the pattern are transferred back to the other side of the machine by the rotation of the shaft 4. The pattern and frame are now in position for another mold to be formed while the casting is being formed in the first-mentioned mold. The operation thus goes on continuously, and with the use of this machine the castings can be rapidly made and very much more quickly than when the mold is formed and the pattern withdrawn in the old way.

I claim as my invention- 1. In a molding-machine, the combination sleeve, a clamping-plate having a right-an-v gled extension which is loosely pivoted to the counterbalanced shaft, and a bracket secured to the support at one side of the counterbalanced shaft and adapted to support the mold.

2. In a molding-machine. the combination with a counterbalanced shaft, a frame keyed to said shaft, a locking projection on said frame and a pattern-supporting plate carrying a pattern adapted'to fit in said frame, of a clamping-plate pivotally connected to said shaft, and a locking-handle pivoted to the outer end of the clam ping-plate and provided with a slot which is adapted to engage the said projection on the frame; said clamping-plate being adapted to be reversed with the pattern and frame.

' WILLIAM M. DUNCAN. In presence of N. N. NEUITT, E. P. WADE. 

